27392910217 has 2 divisors, whose sum is σ = 27392910218. Its totient is φ = 27392910216.

The previous prime is 27392910197. The next prime is 27392910241. The reversal of 27392910217 is 71201929372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14491585161 + 12901325056 = 120381^2 + 113584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27392910217 is a prime.

It is not a weakly prime, because it can be changed into another prime (27392910257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13696455108 + 13696455109.

It is an arithmetic number, because the mean of its divisors is an integer number (13696455109).

Almost surely, 2^27392910217 is an apocalyptic number.

It is an amenable number.

27392910217 is a deficient number, since it is larger than the sum of its proper divisors (1).

27392910217 is an equidigital number, since it uses as much as digits as its factorization.

27392910217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 27392910217 in words is "twenty-seven billion, three hundred ninety-two million, nine hundred ten thousand, two hundred seventeen".